Portable brick-elevator.



No. 806,765. PATENTED DEC. 12, 1905.

v P. A. BAO'H. PORTABLE BRICK ELEVATOR.

APPLIUATION FILED APR.10.1905.

' 2 SHEETS-SHEET 1 PATENTED DEC. 12, 1905.

APPLICATION FILED APR. 10.11905.

2 SHEETSSHEET 2.

PATENT orrron.

FREDERICK A. BACH, OF CHICAGO, ILLINOIS.

PORTABLE BRICK-ELEVATOR.

Specification of Letters Patent.

Patented Dec. 12, 1905.

Application filed April 10, 1905- Scrialll o, 254,743.

To all whom it may concern.-

Be it known that I, FREDERICK A. BACH, a citizen of the United States of America, and a resident of Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Portable Brick-Elevators, of which the following is a specification.

The main object of this invention is to provide an improved form of brick-elevator which may be readily moved from place to place, and is particularly adapted to serve as a scaffold for use in connection with the erection of low structures, such as brick-kilns.

It has heretofore been customary in erecting kilns for burning bricks to employ a certain class of skilled labor for throwing bricks by hand from the surface of the ground to the men on the walls. This requires the employment of men who are specially trained and able to stand the strain of such violent labor. It is for the purpose of doing away with this class of high-priced labor that the herein-described apparatus was invented.

A specific embodiment of my invention is shown in the accompanying drawings, in Which Figure 1 is a vertical longitudinal section of a portable brickelevator and scaffold constructed according to my invention. Fig. 2 is a top plan of the same.

In the construction shown in the drawings the main frame of the elevator and scaffold is constructed of a plurality of upright posts 3, rigidly connected together and braced at their lower part, the whole structure being rnountd upon wheels, so as to be readily moved from place to place. The uprights 3 are preferably free from cross-bracing near their upper parts, for reasons which will afterward appear, and are each provided with a vertical series of holes 4: forreceiving bolts to temporarily secure in position a pair of longitudinal cross-bars 5. These cross-bars 5 may be raised to different elevations by shifting the bolts to corresponding sets of holes in the uprights 3. The bars 5 are connected together at one side of the middle of the length of the frame by means of cross-bars 6, which form a staging or platform for supporting a pair of tracks 7. A second pair of tracks 8 is mounted on a movable platform 9, which is suspended by means of four cables 10, secured to the respective corners of the platform 9. These cables pass around sheaves 11, journaled on the uprights 3, and are then wound upon drums, which are carried by a pair of horizontal shafts 13, extending along opposite sides of the frame 2 and journaled thereon. The uprights 3 are shown in the drawings as formed of channel bars with their flanges facing inwardly and serving as guides for lugs on the platform 9 to prevent the same from swinging on its cables. The tracks 8 are arranged for supporting a car 14 and are in alinement with the tracks 7, so that the car 14 may be run upon the tracks 7 when the tracks 8 are raised to the same level. The forward ends of the tracks 7 are curved upwardly, as shown in Fig. 1, to prevent a car from accidentally running off at that place.

The shafts 1 3 are each provided with a wormwheel 15, and said worm-wheels mesh with worms upon the worm shaft 16, which is driven by a motor 17, mounted in the lower part of the frame 2 and in position to be clear of the tracks 8 when said tracks are lowered until they rest upon the lowest cross-piece 18 of the frame 2.

The frame 2 is mounted upon wheels, so as to be readily moved from place to place. In the form shown the middle pair 19 of said wheels is of larger diameter than the end pairs 20, so that the tread of said middle pair will extend below that of the end pairs and will permit of tilting the frame free from either set of end wheels to permit the same to turn a corner.

The operation of the device shown is as follows: The frame 2 is first moved to a position adjacent to a section of the wall which is to be built, the fixed tracks 7 are adjusted to a certain desired level, and the tracks 8 are then raised and lowered to raise cars of bricks to the level of the tracks 7 from the level of temporary tracks, which are laid upon the ground and extended as the work progresses. These are not shown in the drawings. These temporary tracks serve to convey cars to the tracks 8. A car 14, loaded with bricks, is then run from the temporary tracks upon the tracks 8, and said tracks 8 are elevated by operating the motor until they arrive at a position at the same level with the tracks 7. The car 14 is then run upon the tracks 7 and the tracks 8 are again lowered to the level of the temporary tracks. A second car is then run upon the tracks 8, and said tracks are again raised to the level of the tracks 7. When the bricks contained in both cars have been placed upon the walls, the cars are low ered, and while they are being refilled with higher level.

brick the tracks 7 are adjusted to the next The operation continues in this manner until the section of the kiln adjacent to the frame 2 is completed. The frame is then shifted forward and the temporary tracks correspondingly extended. It will be seen that with a portable elevator and scaffolding such as is shown in the drawings it will no longer be necessary for workmen on the ground to throw bricks up to workmen on the walls; but the men on the walls may take their bricks directly from the cars, and a considerable saving of labor is thus effected.

What I claim as my invention, and desire to secure by Letters Patent, is

l. The combination of a portable frame, wheels supporting said frame, a horizontallydisposed platform adjustable to fixed positions at a plurality of different levels in said frame, a second horizontal platform suspended by cables in said frame and vertically movable therein, a pair of tracks on each of said platforms for supporting a car, said tracks being adapted to be brought into alinement with each other to permit a car to be run from one platform to the other when said platforms are at the same level, and mechanism for raising and lowering said second platform.

2. The combination of a portable frame, wheels supporting said frame, a horizontallydisposed platform adjustable to fixed positions at a plurality of different levels in said frame,

a second horizontal platform mounted to move- Vertically in said frame, a pair of tracks on each of said platforms for supporting a car, said tracks being adapted to be brought into alinement with each other to permit a car to be run from one platform to the other when said platforms are at the same level, and mechanism for raising andlowering said second platform.

3. The combination of a portable frame, wheels supportingsaid frame, a horizontallydisposed platform adjustable to fixed positions at a plurality of diflerent levels in said frame, a second horizontal platform mounted to move vertically in said frame, a pair of tracks on each of said platforms for supporting a car, said tracks being adapted to be brought into alinement with each other to permit a car to be run from one platform to the other when.

said platforms are at the same level, four cables secured directly to the corners of said second platform, sheaves at the upper part of said frame for said cables, drums engaging said cables for raising and lowering said second platform and worm-gearing for simultaneously driving said drums.

Signed at Chicago this 28th day of March,

FREDERICK A. BAOH. Witnesses:

WM. R. RUMMLER, GLEN C. STEPHENS. 

